import os
from google.appengine.api import users
from google.appengine.ext import webapp
from google.appengine.ext.webapp.util import run_wsgi_app
from google.appengine.ext.webapp import template
from google.appengine.ext import db

class Greeting(db.Model):
    author = db.UserProperty()
    content = db.StringProperty(multiline=True)
    date = db.DateTimeProperty(auto_now_add=True)


class MainPage(webapp.RequestHandler):
    
    
    def get(self):
        user = users.get_current_user()
        greetings_query = Greeting.all().order('-date')
        greetings = greetings_query.fetch(10)


        if user:
            url = users.create_logout_url(self.request.uri)
            url_linktext = 'Logout'

        else:
            url = users.create_login_url(self.request.uri)
            url_linktext = 'Login'

        template_values = {
            'greetings': greetings,
            'url': url,
            'url_linktext': url_linktext,
        }

        path = os.path.join(os.path.dirname(__file__), 'index.html')
        self.response.out.write(template.render(path, template_values))

application = webapp.WSGIApplication([('/', MainPage)], debug=True)


def main():
    run_wsgi_app(application)


if __name__ == "__main__":
    main()
